FTA for WTs
The main components of the WTs are illustrated in Fig. 4. The
blades, connected to the rotor via the hub, are moved by the wind
blowing on them. The rotor transmits the mechanical energy via
the low speed shaft through the gearbox to the high speed shaft,
ending in the generator. The low speed shaft is supported by the
main bearing. The alignment to the direction of the wind is
controlled by a yaw system that turns the housing (or “nacelle”) for
that purpose. The nacelle is mounted at the top of a tower, and the
tower is assembled on a base or foundation. The pitch system in
each blade is a mechanism that turns the blade to control the wind
power captured. This can be employed as an aerodynamic brake as
well as for increasing the efficiency of power production. The WT